Teorie dei giochi ed evoluzione delle norme morali

Mathematical game theory – developed starting from the publication of The Theory of Games and Economic Behavior (1944), by John von Neumann and Oskar Morgenstern – aims to outline an ideal model of behaviour of rational agents involved in some interaction with other rational agents. For this reason, game theory has immediately attracted the attention of philosophers dealing with practical rationality and, since the fifties, has been applied to the analysis of several issues concerning ethics and philosophy of politics. Here we will focus on one of the most interesting applications of game theory to ethical-political inquiry, i.e., with the game theoretic analysis of some problems related to the evolution of moral norms. Firstly, we will provide a short outline of the development of game theory, which has lead to the formulation of a plurality of different game theories. It will be shown that such theories can be classified in two main groups: rationalistic game theories –in two different versions: classical and epistemic – and evolutionary game theories. Moreover, some basic elements of classical game theory will be introduced and the key ideas of epistemic and evolutionary game theories will be illustrated. Afterwards, the main approaches developed within the ethical-political applications of game theory will be shortly described. Finally, some results obtained in the last twenty years by the researchers who have analysed the evolution of moral norms by the conceptual tools of evolutionary and epistemic game theories, will be examined.